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Lacunae: a urographic finding in chronic obstructive uropathy
L B Talner1, J A Webb, D H Dail
1Department of Radiology, University of California, San Diego, La Jolla 92093.
AJR. American Journal of Roentgenology
|May 1, 1991
Summary
Renal sinus lacunae, small spaces linked to urinary obstruction, are confirmed by urographic-pathologic correlation. This finding helps differentiate them from papillary necrosis in imaging.
Area of Science:
- Radiology
- Urology
- Pathology
Background:
- Lacunae are rarely described spaces within the renal sinus.
- They are thought to form due to urine extravasation from caliceal fornices during urinary obstruction.
Observation:
- Two cases of obstructive uropathy were examined.
- Urography and subsequent pathologic examination were performed for correlation.
Findings:
- The study provides the first gross anatomic and histologic evidence of renal sinus lacunae.
- Urographic findings in these cases were confirmed pathologically.
Implications:
- Accurate identification of lacunae is crucial for correct diagnosis.
- This can help prevent misdiagnosis, particularly differentiating from papillary necrosis on excretory urography.